TRANSITION-METAL HETEROALLENE COMPLEXES .25. REACTIONS OF KETENE IMINE WITH RU3(CO)12

N-Tolyl-diphenylketenimine (Ph2C=C=NAr, Ar = P-tolyl; C21H17N) (1) reacts with Ru3(CO)12 in boling toluene to yield a trinuclear and a dinuclear complex of formula Ru3(CO)8(C21H17N) (4) and Ru2(CO)6(C21H17N) (5). Reaction of 4 with CO leads to Ru(CO)5 and complex 5. PMe3 and PPh3 react both with 4 and 5 to give the dinuclear phosphane-substituted complexes Ru2(CO)5(PMe3)-(C21H17N) (6) and Ru2(CO)4(PPh3)2(C21H17N) (7), respectively. The structures of the compounds 4, 6 and 7 were determined by X-ray diffraction.